# What is the density of brass

Per the CRC Handbook of Chemistry and Physics? Yes, it’s a homework question, but I don’t have the handbook. I was supposed to look it up before I left the lab yesterday, but I didn’t read the instructions all the way through. Help a brutha out?

Ahem—per the CRC Handbook of Chemistry and Physics.

As you’ll notice in kidchameleon’s lookup, different kinds of brass have different densities. There’s also white brass, like the belt buckle I’m wearing now. It looks silvery, not yellow, until it starts to tarnish.

There’s this.

3.8 grams per cubic inch. Plus or minus a bit by alloy.

Tris

Tris, the joke would work better if the value weren’t so ludicrously off. A cubic inch is a lot more than 3.8 cubic centimeters, and brass is obviously denser than water.

All I’ve got is the 64th edition that lists yellow brass as having a specific gravity of 8.47 and red brass as having a specific gravity of 8.70.

82nd edition (2001-2002)

Yellow brass (high brass) has a density of 8.47 g/cm[sup]3[/sup]

Red brass, 85%, density of 8.74 g/cm[sup]3[/sup]

Wait - it’s a homework assignment to look up something in a handbook? Was the point to illustrate that brass is an alloy and can vary? Boy, your teachers are really challenging you with that assignment. I see a post-doc in your future.

Ooooh, show off with your fancy schmancy 82nd edition. Mine has the periodic table with Earth, Air, Fire, and Water.

Or, possibly, he needs to use the value in order to proceed with a calculation or discussion of a laboratory result as part of his homework, and didn’t obtain the data before it was too late. It was a regular occurrence for me when I did my chemistry courses in university. A copy of the CRC Handbook was in the lab, but if you forgot to get the info before you left at the end of the day, you had to either get it from the library or elsewhere.

It’s pretty too; green with a blue title block. In near perfect condition. My brother bought it for me for a steal off of eBay in 2003.